JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Yanhui Cao,Junhao Zeng,Xuerong Zheng,Yuan Liu,Junda Lu,Jinfeng Zhang,Yang Wang,Yida Deng,Wenbin Hu
Oxygen reduction reaction (ORR) in neutral electrolyte is urgently needed in various areas, such as metal-air batteries. However, the N-coordinated transition-metal single-atom electrocatalysts confront sluggish catalytic kinetics due to the inappropriate electronic structure and the as-resulted unreasonable adsorption strength towards oxygen-containing intermediates. In this work, we develop a strategy to tune the Fe d-orbital spin state by introducing inert Si atom into the first coordination sphere of Fe-N 4 moieties. The experimental and theoretical results suggest that Si atom generates the coordination field distortion of Fe and induces the Fe d-orbital spin state transforming from low to medium spin state. The optimized spin-electron filled state (t 2g 4 e g 1 ) of Fe sites weakens the adsorption strength to intermediates and reduces the energy barrier of *OH desorption. Consequently, Fe-Si/NC catalyst exhibits superior ORR performance compared with that of Fe-NC and commercial Pt/C, showing a more positive half-wave potential of 0.751 V (vs. RHE) in 0.1 mol/L phosphate buffered saline. In addition, Fe-Si/NC-based neutral zinc-air batteries show a maximum power density of 108.9 mW cm −2 and long-term stability for more than 200 h. This work represents the possibility of constructing distorted coordination configurations of single-atom catalysts to modulate electronic structure and enhance ORR activity in neutral electrolyte.
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FOOD CHEMISTRY
·
2024
·
IF 8.5
Meixi Chen,Jun-Hu Cheng,Da-Wen Sun
Graphene oxide (GO), renowned for its two-dimensional structure and exceptional fluorescence quenching capabilities, is a preferred choice for the construction of fluorescence biosensors. As the sensitivity demands for these sensors escalate, enhancing the fluorescence quenching performance of GO and reducing background fluorescence become paramount to optimize the sensor sensitivity. In this study, the use of cold plasma (CP) treatment with glucose solution as a reducing agent to refine GO into reduced graphene oxide (r-GO) with optimal fluorescence quenching abilities was explored. The efficacy of CP treatment was comprehensively analyzed, encompassing fluorescence quenching capacity, morphological alterations, and structural composition. The findings revealed that the ideal conditions for achieving r-GO with superior fluorescence quenching were achieved by treating a mixture of 0.5 mg/mL GO and 0.2 g/mL glucose with CP at 100 kV and 1 A for 10 min. Notably, the resulting r-GO demonstrated remarkable performance in the specific detection of tropomyosin in shrimp, achieving a detection limit of 0.0657 μg/mL, demonstrating its potential for highly sensitive biosensing applications.
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CORROSION SCIENCE
·
2025
·
IF 8.5
Fengting Li,Wentao Qu,Yunchao Peng,Liqiang Yang,Li Wang,Huiling Su,Miantuo Li,Zhikun Wang,Jingyue Wang,Yu Fu,Songqing Hu
In this study, we developed ionic liquid-modified nitrogen-doped carbon dots (IL-NCDs) with enhanced π-π interactions, effectively addressing the aggregation issue of conventional carbon dots in strong acidic conditions. The synthesized IL-NCDs demonstrated superior dispersibility and long-term protective performance in 1 M HCl, achieving a corrosion inhibition efficiency of 97.34 % at 60 mg/L and maintaining protection for over 20 days. The optimized surface charge and increased active sites facilitated the formation of a dense protective film, offering an efficient and eco-friendly solution for metal corrosion protection in acidic environments, with significant potential for industrial applications.
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MEASUREMENT
·
2025
·
IF 5.6
Yongsheng Zhang,Jian Yuan,Tao Xu,Yang Wang,Xiaonan Chen,Hua Yao,Wanxue Li,Lei Dong,Weiguang Ma,Lei Zhang,Wangbao Yin,Suotang Jia
Understanding the elemental composition of polymetallic minerals, particularly strategic metals, is essential for optimizing the development and utilization of critical mineral resources. This study introduces a rapid, cost-effective analytical method for the determination of strategic metals in polymetallic minerals using an in-house developed total reflection X-ray fluorescence (TXRF) system. This system is equipped with an Rh X-ray tube, a four-knife slit, a silicon drift detector, and Python-based spectral processing software, achieving detection limits ranging from 104.94-4.22 mg kg −1 for elements with atomic number (Z) from 11 to 38 and 86. Solid samples were prepared as suspensions by mixing 10 mg of powder in 1 mL of ethylene glycol, and Ga as internal standard was added. The quantitative analysis accuracy of the system was validated using cobalt-rich nodule standard reference material. Its application to real-world copper-nickel sulfide ores exhibited a strong linear correlation with inductively coupled plasma atomic emission spectroscopy (R 2 = 0.9929) and yielded results comparable to those obtained with a commercial Mo-TXRF spectrometer (R 2 = 0.9919). These findings were demonstrated the suitability of the in-house developed TXRF system for the analysis of polymetallic minerals, and provide a valuable reference for its application.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2024
·Vol. 25
·期 7
·3654
·
IF 4.9
Wencheng Zhao,Huizi Cui,Kaifeng Liu,Xiaotang Yang,Shu Xing,Wannan Li
Type 2 diabetes mellitus (T2DM) is marked by persistent hyperglycemia, insulin resistance, and pancreatic β-cell dysfunction, imposing substantial health burdens and elevating the risk of systemic complications and cardiovascular diseases. While the pathogenesis of diabetes remains elusive, a cyclical relationship between insulin resistance and inflammation is acknowledged, wherein inflammation exacerbates insulin resistance, perpetuating a deleterious cycle. Consequently, anti-inflammatory interventions offer a therapeutic avenue for T2DM management. In this study, a herb called Baikal skullcap, renowned for its repertoire of bioactive compounds with anti-inflammatory potential, is posited as a promising source for novel T2DM therapeutic strategies. Our study probed the anti-diabetic properties of compounds from Baikal skullcap via network pharmacology, molecular docking, and cellular assays, concentrating on their dual modulatory effects on diabetes through Protein Tyrosine Phosphatase 1B (PTP1B) enzyme inhibition and anti-inflammatory actions. We identified the major compounds in Baikal skullcap using liquid chromatography–mass spectrometry (LC–MS), highlighting six flavonoids, including the well-studied baicalein, as potent inhibitors of PTP1B. Furthermore, cellular experiments revealed that baicalin and baicalein exhibited enhanced anti-inflammatory responses compared to the active constituents of licorice, a known anti-inflammatory agent in TCM. Our findings confirmed that baicalin and baicalein mitigate diabetes via two distinct pathways: PTP1B inhibition and anti-inflammatory effects. Additionally, we have identified six flavonoid molecules with substantial potential for drug development, thereby augmenting the T2DM pharmacotherapeutic arsenal and promoting the integration of herb-derived treatments into modern pharmacology.
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ACS Omega
·
2024
·
IF 3.7
Jin Long Zhang,Bing Yuan,Xiao Wei Zhang,Heng Zhang,Hao Wang,Xing Zhi Wang,Hong Wei Zhao
Drug-eluting microspheres are commonly used as a local drug delivery system for interventional therapy. However, current drug-eluting microspheres have poor X-ray visibility, which can hinder tracking and postembolization evaluation. In the current study, X-ray-visible poly(acrylic acid) drug-eluting beads loaded with iodized oil (IO-PAA-DEBs) ranging from 100–300 μm were prepared and evaluated both in vitro and in vivo. Iodized oil served as the radiopaque agent, and X-ray and computed tomography scanning confirmed that the microspheres exhibited excellent X-ray-visible properties. The drug-loading capacities of bleomycin hydrochloride, doxorubicin hydrochloride, and oxaliplatin were also investigated. IO-PAA-DEBs exhibited sustained drug release properties, accompanied by a cumulative drug release rate that reached approximately 60% after 120 h. In vitro and in vivo experiments revealed that IO-PAA-DEBs had good biocompatibility. Collectively, these results demonstrated that IO-PAA-DEBs could facilitate transarterial embolization and sustained drug delivery.
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eScience
·
2025
·
IF 36.6
Qingxu Zhang,Yaohui Huang,Honghao Hu,Chao Ma,Yifan Zhong,Pingli Wu,Wei Lv,Fujun Li,Xizheng Liu
Practical application of lithium–air batteries (LABs) is hindered by volatile liquid electrolytes, which compromise cycling stability at both high and low temperatures. Herein, we propose an in situ strategy for the fabrication of an ether-in-gel electrolyte to enhance their performance. LiN(CH 3 ) 2 (LDA), formed from metallic Li and N,N-dimethylformamide, binds with TEGDME (G4) to create an LDA(G4) 2 matrix that confines liquid G4 and traces of DMF, forming a gel electrolyte. The strong Li + -O/N interaction between LDA and G4 enables high superoxide solubility and high intrinsic thermal stability. LABs with the gel electrolyte exhibit over 1250 h stability (>50 days) in ambient air with high energy efficiency of over 70% and maintain stable cycles (540 h at 55 °C and 800 hours at −20 °C) without significant capacity decay. This work paves the way for design of new ether-in-gel electrolytes for high-energy batteries under all climate conditions.
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PEST MANAGEMENT SCIENCE
·
2024
·Vol. 80
·期 10
·4950-4958
·
IF 3.8
Penglong Wang,Qi Liu,Xu Wang,Tiancong Sun,Boxing Liu,Bohan Wang,Huan Li,Chuanwen Wang,Weiwei Sun,Baoliang Pan
BACKGROUND Dermanyssus gallinae , the poultry red mite (PRM), is a worldwide ectoparasite posing significant economic challenges in poultry farming. The extensive use of pyrethroids for PRM control has led to the emergence of pyrethroid resistance. The objective of this study is to detect the pyrethroid resistance and explore its associated point mutations in the voltage-gated sodium channel (VGSC) gene among PRM populations in China. RESULTS Several populations of D. gallinae , namely CJF-1, CJP-2, CJP-3, CSD-4 and CLD-5, displayed varying degrees of resistance to beta-cypermethrin compared to a susceptible field population (CBP-5). Mutations of VGSC gene in populations of PRMs associated with pyrethroid resistance were identified through sequencing its fragments IIS4–IIS5 and IIIS6. The mutations I917V, M918T/L, A924G and L925V were present in multiple populations, while no mutations were found at positions T929, I936, F1534 and F1538. CONCLUSION The present study confirmed the presence of extremely high levels of pyrethroid resistance in PRM populations in China, and for the first time detected four pyrethroid resistance mutations in the VGSC gene. Identifying pyrethroid resistance in the field population of PRM in China can be achieved through screening for VGSC gene mutations as an early detection method. Our findings underscore the importance of implementing chemical PRM control strategies based on resistance evidence, while also considering the management of acaricide resistance in the control of PRMs. © 2024 Society of Chemical Industry.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Yayun Pu,Yufei Liu,Xiaosheng Tang,Qiang Huang,Limin Huang
Realizing bifunctional catalysts for the HER and OER in a unified environment bears the promising goal of reducing the cost and complexity of electrolyzer devices. Dual atoms configuration intrinsically active to hydrogen/oxygen evolution is a feasible way to achieve that target. In this work, Co, Ir active species were selected to be inserted into the interlayer space of layered V 2 O 5 , forming a two-dimensional confined structure that significantly improves the atomic efficiency. During the electrochemical water splitting in alkaline medium, the V-O framework that encapsulated the active species in layered V 2 O 5 was collapsed and disrupted due to its acidic nature. The HER/OER active Co, Ir were readily released and exposed to the reactant. In situ structure evolution was monitored and elaborately analyzed by operando Raman, TEM and XPS characterizations. Further, DFT calculation disclosed that the Co atom was covalently stabilized by the nearest oxygen that leads to electron-depleted Co. The stabilization of Ir was achieved by forming both a covalent bond with oxygen and a metallic bond with sublayer V. This, however, resulted in a changed electron distribution in Ir, leading to better binding with oxygenate intermediates and improved OER activity. As for the alkaline HER, the potential determining step (PDS) of IrCo@V 2 O 5 is predominately determined as the OH desorption, regardless of the H evolution pathway of Volmer-Tafel or Volmer-Heyrovsky. The bifunctional IrCo@V 2 O 5 acted like a “Trojan Horse” and achieved an ultrahigh mass activity of 848 A g -1 Co,Ir for the OER and 461 A g -1 Co,Ir for the HER. This work provides new insight into creating highly effective electrocatalysts via the in situ releasing methodology.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Luna Ruan,Xinyu Han,Lihua Zhu,Congxiao Shang,Anna Kroner,Kaijie Liu,Yibo Zhang,Bing Hui Chen,Zhengxiao Guo
Metal nanoparticles are widely considered for heterogeneous catalysis due to their high atomic efficiency and tunable active microenvironment, but their specific functional tendencies are still unclear. Here, we report that a Rh@ZrO 2 /NC catalyst with only 0.1 wt% Rh exhibits exceptional catalytic performance and high selectivity (p-nitroacetophenone conversion-98.6 %, p-aminoacetophenone selectivity-100 %, r -56.4 mol p-nitroacetophenone /(mol Rh ·min)) towards the hydrogenation of the -NO 2 group in nitroarene to -NH 2 . This is because the interaction between Rh species and “ZrO 2 -N” results in significant hydrogen spillover in the catalyst, as supported by DFT calculations. Extensive characterizations from TG, DTG, NAP-XPS, in-situ Raman spectroscopy, in-situ DRIFT spectroscopy and DFT calculations further confirm the adsorption, activation and dissociation of hydrogen on Rh nanoparticles. The H* species migrate readily over ZrO 2 -NC, to facilitate the catalytic activity and selectivity for the hydrogenation of nitroarene. This study presents a new approach to develop highly efficient and selective metal nanoparticle-catalysts for cost-effective hydrogenation reactions.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Boyi Liao,Lei Li,Wenqi Liang,Huimin Lin,Ben Hu,Kexin Wang,Renli Huang,Peiqi Wang,Qining Weng,Yuanchen He,Yue Cao,Meng Yu,Zhaowei Zou
Sepsis is a life-threatening condition characterized by organ dysfunction caused by a dysregulated host response to infection. An inflammatory intestinal environment, disruption of the intestinal epithelial barrier, impairment of the mucus layer, and dysregulation of the gut microbiome can lead to pathogen translocation and increased susceptibility to sepsis. Hence, an orally administered nanomedicine is developed, S-Z@M nanoparticles (NPs), based on food-derived mussel adhesive protein (M)-modified zeolitic imidazolate framework-8 (Z) for the targeted delivery of anti-inflammatory herbal medicine. S-Z@M NPs exert multi-therapeutic effects by forming a physical barrier at injured intestinal sites and persistently activating anti-inflammatory pathways. First, S-Z@M NPs scavenge reactive oxygen species (ROS) to reduce oxidative stress injury. After ROS-triggered charge transition and oxidative cross-linking, the M layer adheres to the negatively charged damaged mucosa to form a physical barrier, preventing further damage from microorganisms and toxins. Sinomenine (S) releases from Z NPs in response to an acidic environment suppresses pro-inflammatory pathways, thereby inhibiting intestinal epithelial cell apoptosis and restoring intestinal tight junctions and gut microbiota homeostasis. Overall, S-Z@M NPs show a strong potential to regulate the inflammatory microenvironment and restore intestinal barrier function, opening the door for further exploitation in sepsis therapy.
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ENVIRONMENTAL POLLUTION
·
2025
·
IF 7.3
Pengfei Wu,Yu Zhao,Ngai Kwan Chan,Jian-Wen Qiu,Zongwei Cai
Microplastics are widely recognized as significant marine pollutants with health implications, yet their abundance patterns, sources, and environmental determinants remain unknown in many regions. In this study, we surveyed 31 sites to assess the status of microplastic pollution in the surface waters of Hong Kong, one of the most densely populated cities in Southern China. Microplastics (20 μm–5 mm) were detected at all survey sites, with abundances ranging from 29 to 2.7 items/L (mean: 14.4 ± 8.6 items/L) along an estuary-to-ocean gradient. The highest abundances were observed in the western estuarine sites, which receive substantial river runoff, and within Victoria Harbour, which receives effluents from a major sewage treatment plant. Low-density polymers such as polypropylene (PP) and polyethylene (PE) were predominant, while high-density polymers like polyethylene terephthalate (PET) and polyvinyl chloride (PVC) were less abundant, except near sewage outfalls in Victoria Harbour. High concentrations of polystyrene (PS) in Deep Bay, an oyster culture area, suggest that Styrofoam used in local oyster culture rafts is a potential pollution source. Multivariate analyses indicate that microplastic pollution in Hong Kong is influenced by local environmental factors, with four environmental proxies—salinity, chlorophyll a, E. coli , and total inorganic nitrogen—accounting for a significant portion of the spatial pattern in microplastic abundance. Overall, our study disentangles the complex influences of the Pearl River and local human activities on the abundance and distribution of microplastics in Hong Kong waters, highlighting the complexity of tracing the sources of these pollutants.
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